Yong'in tarqatuvchi emas, past tutun va gaz chiqarilishi bilan kabel elektr energiyasini va elektr signallarini stasionar o'rnatmalarda uzatish va taqsimlash uchun mo'ljallangan, nominal o'zgaruvchan kuchlanish 660, 1000 V yoki mos ravishda doimiy kuchlanish 1000 va 1500 V.
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